SOURCE LOCALIZATION PERFORMANCE BY THE LATERAL LINE

侧线系统是一种机械感觉毛细胞系统， 几乎所有的水生脊椎动物。 与内耳毛细胞系统一样， 侧线传导机械刺激。而不是检测 姿势变化或声音，然而，侧线感觉水 流体中伴随声刺激的运动。 然而，原则 这两个系统使用的刺激编码可能非常相似。 这 一项提案提出了一系列假设， 与侧线刺激的空间模式有很大关系 频率辨别与刺激模式有关 在耳蜗里。 本提案的具体目标是检验这些 通过研究距离范围和空间 侧线系统的辨别能力取决于 感觉器官的空间分布。 侧线差异 结构，因为它们会影响的空间格局， 横向线激励，从而提供激励的测试 侧向线源定位模式模型。 本研究 有望增加我们对这种空间模式的理解， 神经系统利用沿着毛细胞阵列的激励 提取有关刺激源的信息。

The lateral line system is a mechanosensory hair cell system found in nearly all aquatic vertebrates. Like inner ear hair cell systems, the lateral line transduces mechanical stimulation. Rather than sensing postural changes or sound, however, the lateral line senses water motions that accompany acoustic stimuli in fluids. Yet the principles of stimulus encoding used by the two systems may be quite similar. This proposal develops a set of hypotheses that relate source localization to the spatial pattern of lateral line stimulation in much the same way that frequency discrimination is related to the pattern of stimulation in the cochlea. The specific aims of this proposal test these hypotheses by examining how the distance range and spatial discriminatory ability of the lateral line system is determined by the spatial distribution of sensory organs. Differences in lateral line structure are presented as they would affect the spatial pattern of lateral line excitation and thus provide a test of the excitation pattern model of lateral line source localization. This research promises to increase our understanding of how such spatial patterns of excitation along hair cell arrays are used by the nervous system to extract information about stimulus sources.